CN204359760U - Gas chromatograph electronic closed loop formula gas flow automatic calibration control device - Google Patents
Gas chromatograph electronic closed loop formula gas flow automatic calibration control device Download PDFInfo
- Publication number
- CN204359760U CN204359760U CN201420663630.2U CN201420663630U CN204359760U CN 204359760 U CN204359760 U CN 204359760U CN 201420663630 U CN201420663630 U CN 201420663630U CN 204359760 U CN204359760 U CN 204359760U
- Authority
- CN
- China
- Prior art keywords
- flowmeter
- module
- calibrated
- closed loop
- control device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Details Of Flowmeters (AREA)
Abstract
A kind of gas chromatograph electronic closed loop flow gas flow automatic calibration control device, it is characterized in that: it comprises industrial computer (1), described industrial computer (1) is connected with link control module (2), described link control module (2) accesses module to be calibrated (3) and flowmeter (4), and described module to be calibrated (3) output terminal is connected to flowmeter (4); The flow calibrated can be stored in and be calibrated in the external memory storage of module by the utility model automatically, improves the precision of detection efficiency and detection.
Description
Technical field
The utility model relates to technical field of analytical instruments, specifically just relates to a kind of gas chromatograph electronic closed loop formula gas flow automatic calibration control device.
Background technology
Gas chromatograph is the instrument by vapor-phase chromatography, material being carried out to qualitative and quantitative analysis, be used for carrying out analysis to each component in mixed gas to detect, gas chromatograph is a kind of separation, analysis tool of many mixture, it take gas as mobile phase, adopts the Column chromatography techniques of douche.When the amalyzing substances of many components enters into chromatographic column, because each component gas phase is in the chromatography column different with the partition factor between immobile liquid liquid phase, therefore each component is also just different in the travelling speed of chromatographic column, after certain column length, order is left chromatographic column and is entered detecting device, be converted to electric signal after testing afterwards and deliver to data processing stations, thus complete the qualitative and quantitative analysis to measured matter.Electronic closed loop flow system is applied very wide in oil, chemical industry, biological chemistry, medical and health, food industry, environmental protection etc.It is except for quantitatively and except qualitative analysis, can also the physicochemical constant such as the partition factor of working sample on Stationary liquid, activity coefficient, molecular weight and specific surface area.
Gas chromatograph system system comprises five large ingredients: air-channel system, sampling system, piece-rate system, temperature control system and detection record system, in its air-channel system, gas flow controls to be unusual factor in gas chromatographic analysis, along with the development of measuring technology, electronic closed loop flow system device gas flow air-path control system automaticity is more and more higher, because the gas flow of electronic closed loop flow system device is less, generally between tens milliliters to hundreds of milliliter.In order to analyze material composition, need to demarcate gas flow.In the staking-out work of gas flow, in order to obtain flow accurately, often a flow curve needs demarcation tens points, could calibrate flow curve very accurately.This work, by serial connection external flow meter, is transferred to corresponding flow, and is manually made a record one by one.Then be input in external memory storage, then call can use normally by single-chip microcomputer.In this process, some data errors can not be there is, otherwise must again demarcate.Whole process is very loaded down with trivial details, and more easily occurs error, causes whole test process inefficiency.
Utility model content
The purpose of this utility model be for existing gas chromatograph when carrying out constituent analysis to material, need the technological deficiency of manually gas flow being demarcated, a kind of gas chromatograph electronic closed loop formula gas flow automatic calibration control device is provided, the flow calibrated can be stored in automatically is calibrated in the external memory storage of module, improves the precision of detection efficiency and detection.
Technical scheme
In order to realize above-mentioned technical purpose, the utility model designs a kind of gas chromatograph electronic closed loop formula gas flow automatic calibration control device, it is characterized in that: it comprises industrial computer, described industrial computer is connected with link control module, described link control module accesses module to be calibrated and flowmeter, and described module output terminal to be calibrated is connected to flowmeter;
The air intake opening of described flowmeter is equipped with reduction valve, and flowmeter comprises flow sensor, and flow sensor is by Single-chip Controlling, and the output terminal of flowmeter is connected with proving flowmeter;
Further, described link control module is single-chip microcomputer.
Beneficial effect
A kind of gas chromatograph electronic closed loop formula gas flow automatic calibration control device that the utility model provides, automatically can be stored in the flow calibrated and be calibrated in the external memory storage of module, improve the precision of detection efficiency and detection.
Accompanying drawing explanation
Accompanying drawing 1 is annexation schematic diagram of the present utility model.
Accompanying drawing 2 is flowmeter annexation schematic diagram in the utility model.
Accompanying drawing 3 is link control module annexation schematic diagram in the utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment
As shown in accompanying drawing 1 ~ 3, a kind of gas chromatograph electronic closed loop formula gas flow automatic calibration control device, it is characterized in that: it comprises industrial computer 1, described industrial computer 1 is connected with link control module 2, described link control module 2 accesses module 3 to be calibrated and flowmeter 4, and described module 3 output terminal to be calibrated is connected to flowmeter 4;
The air intake opening of described flowmeter 4 is equipped with reduction valve 5, and flowmeter 4 comprises flow sensor 401, and flow sensor 401 controls by single-chip microcomputer 402, and the output terminal of flowmeter 4 is connected with proving flowmeter 6;
Described link control module 2 is single-chip microcomputer.
Utility model works process is: first computing machine sends calibration command, then whole system enters calibration mode, after this order card extender receives, be transmitted to module to be calibrated, after module to be calibrated receives orders, automatic closedown flowrate control valve, in this process, the reading of card extender constantly reading flow gauge, when flow reading in flowmeter is 0ml/min, can notify module to be calibrated, now calibration module reads the flow that flow value is exactly corresponding 0ml/min, and these data are saved in external memory storage.Such flow just calibration is good.Then notify computing machine, computing machine can send second traffic alignment value 20ml/min.Be transmitted to by interconnecting module and be calibrated module, after calibration module receives orders, provide a Trend value according to flow cycled trend, carrying out the closed-loop control of oneself, when controlling basicly stable, reading actual flow value by interconnecting module, compare their deviation, calculate and adjust Trendline.To be controlled stable after compare again, then to adjust, until within the deviation of two flows is less than 0.2ml/min, represent successful calibration.The calibration of flow is gone down one by one like this, until the maximal value of our predetermined calibration flow.Calibration terminates.
Claims (2)
1. a gas chromatograph electronic closed loop formula gas flow automatic calibration control device, it is characterized in that: it comprises industrial computer (1), described industrial computer (1) is connected with link control module (2), described link control module (2) accesses module to be calibrated (3) and flowmeter (4), and described module to be calibrated (3) output terminal is connected to flowmeter (4);
The air intake opening of described flowmeter (4) is equipped with reduction valve (5), flowmeter (4) comprises flow sensor (401), flow sensor (401) controls by single-chip microcomputer (402), and the output terminal of flowmeter (4) is connected with proving flowmeter (6);
2. a kind of gas chromatograph electronic closed loop formula gas flow automatic calibration control device as claimed in claim 1, is characterized in that: described link control module (2) is single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420663630.2U CN204359760U (en) | 2014-11-06 | 2014-11-06 | Gas chromatograph electronic closed loop formula gas flow automatic calibration control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420663630.2U CN204359760U (en) | 2014-11-06 | 2014-11-06 | Gas chromatograph electronic closed loop formula gas flow automatic calibration control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204359760U true CN204359760U (en) | 2015-05-27 |
Family
ID=53261224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420663630.2U Active CN204359760U (en) | 2014-11-06 | 2014-11-06 | Gas chromatograph electronic closed loop formula gas flow automatic calibration control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204359760U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316626A (en) * | 2014-11-06 | 2015-01-28 | 上海仪电分析仪器有限公司 | Electronic closed-loop type gas flow automatic calibration control device for gas chromatographic instrument |
-
2014
- 2014-11-06 CN CN201420663630.2U patent/CN204359760U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316626A (en) * | 2014-11-06 | 2015-01-28 | 上海仪电分析仪器有限公司 | Electronic closed-loop type gas flow automatic calibration control device for gas chromatographic instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205426869U (en) | Adopt portable designing's non -methane total hydrocarbon analysis module | |
| CN107153106A (en) | A kind of dynamic dilution gas calibration device | |
| CN101819194B (en) | Standard sample dilution deviation tracking and correcting system calibrated by gas analyzer on line and method thereof | |
| CN205373919U (en) | Be used for industrial field to measure check gauge based on teletransmission | |
| CN105223264A (en) | Mark method, device and application in a kind of simulation of mass spectrum quantitative test | |
| US20150168284A1 (en) | Capillary viscometer and multiscale pressure differential measuring device | |
| CN105372195B (en) | A kind of micro ultraviolet specrophotometer quality determining method and detection kit | |
| CN106153498A (en) | A kind of new method detecting solute concentration in solution and device thereof | |
| CN205038195U (en) | Online gas chromatograph | |
| CN101329228B (en) | Peroxy acyl radical nitric acid lipid substance sampling system and detection method | |
| CN204359760U (en) | Gas chromatograph electronic closed loop formula gas flow automatic calibration control device | |
| CN104251889A (en) | Method for determining content of three components comprising phenylephrine hydrochloride, chlorphenamine maleate and ibuprofen in compound cold treatment tablet | |
| CN103558265A (en) | Automatic testing system with gas sensitive element | |
| CN103308507A (en) | Analysis method for rapidly measuring free isocyanate (NCO) in polyurethane | |
| CN104316626A (en) | Electronic closed-loop type gas flow automatic calibration control device for gas chromatographic instrument | |
| CN108195950A (en) | The dilution error detection device and its detection method of calibrating gas dilution device based on gas chromatograph | |
| CN112964834A (en) | Calibration method of dynamic calibrator for fixed pollution source | |
| CN102954942A (en) | Palladium content testing method | |
| CN110780002A (en) | High-efficiency low-cost detection method for quantifying essential oil components | |
| CN103940928A (en) | Method for determining chlorhexidine acetate content in sanitary towel | |
| CN205103155U (en) | Gaseous on -line measuring appearance suitable for organic looks | |
| CN103175902A (en) | Gas intake system used for simulating insulating oil proportioning of transformer | |
| CN203259510U (en) | Proportioning and air intake system for simulating transformer insulating oil | |
| CN209589904U (en) | A kind of high-precision gas sensor array detection device | |
| CN202903754U (en) | Inlet gas path automatic control structure of flame ionization detector of gas chromatograph |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |